\documentclass[landscape, zihao=5]{ctexart}
\usepackage{multicol}
\usepackage{tabu}
\usepackage{lscape}
\usepackage{geometry} % 页面设置
\usepackage[usenames, dvipsnames]{color}
\usepackage{xcolor
}

\usepackage{indentfirst}
\setlength{\parindent}{0em}

\begin{document}
\thispagestyle{empty} % 将本页的style设置为空，页码不会出现
\newgeometry{left=1cm,right=1cm,top=1cm,bottom=1cm}


\begin{multicols}{3}
  \taburowcolors[2] 3{Gray .. ForestGreen}
  % \taburulecolor {Green}
  \begin{tabu}{|X[1]|X[3]|}
    \hline
    % \multicolumn{2}{|l|}{Styles C-c C-s}  \\ \hline
    C-c C-s e   & Make word or region italic(emphasis)      \\ \hline
    C-c C-s s   & Make word or region bold (strong)         \\ \hline
    C-c C-s p   & Make word or region preformed(code block) \\ \hline
    C-c C-s C-p & Make region preformed                     \\ \hline
    C-c C-s c   & Make word or region inline code           \\ \hline
    C-c C-s b   & Make active region a blockquote           \\ \hline
    % \taburowcolors{2} 2{blue .. gray}
    C-c C-s C-b & Make region a blockquote                  \\ \hline

  \end{tabu}
  \vspace{0.5cm}
  \begin{tabu}{|X[1]|X[3]|}
    \hline
    % \textbf{序号} & \textbf{名称} & \textbf{品牌} & \textbf{数量} & \textbf{单
    % 位} \\ \hline
    C-c C-s f & Make word or region italic(emphasis) \\ \hline
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    %\lineseq & 星地资源管理系统 & 自研 \\\hline
  \end{tabu}
  \begin{tabu}{|X[1]|X[3]|}
    \hline
    % \textbf{序号} & \textbf{名称} & \textbf{品牌} & \textbf{数量} & \textbf{单
    % 位} \\ \hline
    C-c C-s f & Make word or region italic(emphasis) \\ \hline
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    %\lineseq & 星地资源管理系统 & 自研 \\\hline
  \end{tabu}
  \begin{tabu}{|X[1]|X[3]|}
    \hline
    % \textbf{序号} & \textbf{名称} & \textbf{品牌} & \textbf{数量} & \textbf{单
    % 位} \\ \hline
    C-c C-s f & Make word or region italic(emphasis) \\ \hline
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    \hline
    %\lineseq & 星地资源管理系统 & 自研 \\\hline
  \end{tabu}

  \begin{tabu}{|X[1]|X[3]|}
    \hline
    % \textbf{序号} & \textbf{名称} & \textbf{品牌} & \textbf{数量} & \textbf{单
    % 位} \\ \hline
    C-c C-s f & Make word or region italic(emphasis) \\ \hline
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    %\lineseq & 星地资源管理系统 & 自研 \\\hline
  \end{tabu}

  
  \begin{tabu}{|X[1]|X[3]|}
    \hline
    % \textbf{序号} & \textbf{名称} & \textbf{品牌} & \textbf{数量} & \textbf{单
    % 位} \\ \hline
    C-c C-s f & Make word or region italic(emphasis) \\ \hline
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    C-c C-s e & Make word or region italic(emphasis) \\
    %\lineseq & 星地资源管理系统 & 自研 \\\hline
  \end{tabu}

\end{multicols}{3}
\end{document}